Gabriele Cosmo
637 lines
20 KiB
C++
637 lines
20 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// $Id: G4VEmProcess.hh,v 1.61 2010/08/17 17:36:59 vnivanch Exp $
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// GEANT4 tag $Name: geant4-09-04 $
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//
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// -------------------------------------------------------------------
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//
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// GEANT4 Class header file
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//
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//
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// File name: G4VEmProcess
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//
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// Author: Vladimir Ivanchenko
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//
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// Creation date: 01.10.2003
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//
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// Modifications:
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// 30-06-04 make destructor virtual (V.Ivanchenko)
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// 09-08-04 optimise integral option (V.Ivanchenko)
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// 11-08-04 add protected methods to access cuts (V.Ivanchenko)
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// 09-09-04 Bug fix for the integral mode with 2 peaks (V.Ivanchneko)
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// 16-09-04 Add flag for LambdaTable and method RecalculateLambda (VI)
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// 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
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// 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
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// 18-04-05 Use G4ParticleChangeForGamma (V.Ivantchenko)
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// 09-05-05 Fix problem in logic when path boundary between materials (VI)
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// 11-01-06 add A to parameters of ComputeCrossSectionPerAtom (VI)
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// 01-02-06 put default value A=0. to keep compatibility with v5.2 (mma)
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// 13-05-06 Add method to access model by index (V.Ivanchenko)
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// 12-09-06 add SetModel() (mma)
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// 25-09-07 More accurate handling zero xsect in
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// PostStepGetPhysicalInteractionLength (V.Ivanchenko)
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// 27-10-07 Virtual functions moved to source (V.Ivanchenko)
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// 15-07-08 Reorder class members for further multi-thread development (VI)
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// 17-02-10 Added pointer currentParticle (VI)
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//
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// Class Description:
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//
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// It is the unified Discrete process
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// -------------------------------------------------------------------
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//
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#ifndef G4VEmProcess_h
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#define G4VEmProcess_h 1
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#include "G4VDiscreteProcess.hh"
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#include "globals.hh"
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#include "G4Material.hh"
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#include "G4MaterialCutsCouple.hh"
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#include "G4Track.hh"
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#include "G4EmModelManager.hh"
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#include "G4UnitsTable.hh"
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#include "G4ParticleDefinition.hh"
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#include "G4ParticleChangeForGamma.hh"
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class G4Step;
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class G4VEmModel;
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class G4DataVector;
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class G4VParticleChange;
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class G4PhysicsTable;
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class G4PhysicsVector;
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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class G4VEmProcess : public G4VDiscreteProcess
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{
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public:
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G4VEmProcess(const G4String& name,
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G4ProcessType type = fElectromagnetic);
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virtual ~G4VEmProcess();
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//------------------------------------------------------------------------
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// Virtual methods to be implemented in concrete processes
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//------------------------------------------------------------------------
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virtual G4bool IsApplicable(const G4ParticleDefinition& p) = 0;
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virtual void PrintInfo() = 0;
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protected:
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virtual void InitialiseProcess(const G4ParticleDefinition*) = 0;
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//------------------------------------------------------------------------
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// Implementation of virtual methods common to all Discrete processes
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//------------------------------------------------------------------------
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public:
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// Initialise for build of tables
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void PreparePhysicsTable(const G4ParticleDefinition&);
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// Build physics table during initialisation
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void BuildPhysicsTable(const G4ParticleDefinition&);
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void PrintInfoDefinition();
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// implementation of virtual method, specific for G4VEmProcess
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G4double PostStepGetPhysicalInteractionLength(
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const G4Track& track,
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G4double previousStepSize,
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G4ForceCondition* condition
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);
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// implementation of virtual method, specific for G4VEmProcess
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G4VParticleChange* PostStepDoIt(const G4Track&, const G4Step&);
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// Store PhysicsTable in a file.
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// Return false in case of failure at I/O
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G4bool StorePhysicsTable(const G4ParticleDefinition*,
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const G4String& directory,
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G4bool ascii = false);
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// Retrieve Physics from a file.
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// (return true if the Physics Table can be build by using file)
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// (return false if the process has no functionality or in case of failure)
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// File name should is constructed as processName+particleName and the
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// should be placed under the directory specifed by the argument.
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G4bool RetrievePhysicsTable(const G4ParticleDefinition*,
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const G4String& directory,
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G4bool ascii);
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// deexcitation activated per G4Region
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void ActivateDeexcitation(G4bool, const G4Region* r = 0);
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//------------------------------------------------------------------------
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// Specific methods for Discrete EM post step simulation
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//------------------------------------------------------------------------
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// It returns the cross section per volume for energy/ material
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G4double CrossSectionPerVolume(G4double kineticEnergy,
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const G4MaterialCutsCouple* couple);
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// It returns the cross section of the process per atom
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G4double ComputeCrossSectionPerAtom(G4double kineticEnergy,
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G4double Z, G4double A=0.,
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G4double cut=0.0);
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G4double MeanFreePath(const G4Track& track);
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// It returns cross section per volume
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inline G4double GetLambda(G4double& kinEnergy,
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const G4MaterialCutsCouple* couple);
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//------------------------------------------------------------------------
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// Specific methods to build and access Physics Tables
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//------------------------------------------------------------------------
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// Binning for lambda table
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inline void SetLambdaBinning(G4int nbins);
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inline G4int LambdaBinning() const;
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// Min kinetic energy for tables
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inline void SetMinKinEnergy(G4double e);
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inline G4double MinKinEnergy() const;
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// Max kinetic energy for tables
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inline void SetMaxKinEnergy(G4double e);
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inline G4double MaxKinEnergy() const;
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inline void SetPolarAngleLimit(G4double a);
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inline G4double PolarAngleLimit() const;
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inline const G4PhysicsTable* LambdaTable() const;
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//------------------------------------------------------------------------
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// Define and access particle type
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//------------------------------------------------------------------------
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inline const G4ParticleDefinition* Particle() const;
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inline const G4ParticleDefinition* SecondaryParticle() const;
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//------------------------------------------------------------------------
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// Specific methods to set, access, modify models and basic parameters
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//------------------------------------------------------------------------
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protected:
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// Select model in run time
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inline G4VEmModel* SelectModel(G4double& kinEnergy, size_t index);
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public:
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// Select model by energy and region index
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inline G4VEmModel* SelectModelForMaterial(G4double kinEnergy,
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size_t& idxRegion) const;
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// Add model for region, smaller value of order defines which
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// model will be selected for a given energy interval
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void AddEmModel(G4int, G4VEmModel*, const G4Region* region = 0);
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// Assign a model to a process
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void SetModel(G4VEmModel*, G4int index = 1);
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// return the assigned model
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G4VEmModel* Model(G4int index = 1);
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// Define new energy range for the model identified by the name
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void UpdateEmModel(const G4String&, G4double, G4double);
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// Access to models
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G4VEmModel* GetModelByIndex(G4int idx = 0, G4bool ver = false);
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// access atom on which interaction happens
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const G4Element* GetCurrentElement() const;
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inline void SetLambdaFactor(G4double val);
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inline void SetIntegral(G4bool val);
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inline G4bool IsIntegral() const;
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inline void SetApplyCuts(G4bool val);
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inline void SetBuildTableFlag(G4bool val);
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//------------------------------------------------------------------------
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// Other generic methods
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//------------------------------------------------------------------------
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protected:
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G4double GetMeanFreePath(const G4Track& track,
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G4double previousStepSize,
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G4ForceCondition* condition);
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G4PhysicsVector* LambdaPhysicsVector(const G4MaterialCutsCouple*);
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inline G4double RecalculateLambda(G4double kinEnergy,
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const G4MaterialCutsCouple* couple);
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inline G4ParticleChangeForGamma* GetParticleChange();
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inline void SetParticle(const G4ParticleDefinition* p);
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inline void SetSecondaryParticle(const G4ParticleDefinition* p);
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inline size_t CurrentMaterialCutsCoupleIndex() const;
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inline G4double GetGammaEnergyCut();
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inline G4double GetElectronEnergyCut();
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inline void SetStartFromNullFlag(G4bool val);
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private:
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void Clear();
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void BuildLambdaTable();
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void FindLambdaMax();
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inline void InitialiseStep(const G4Track&);
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inline void DefineMaterial(const G4MaterialCutsCouple* couple);
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inline void ComputeIntegralLambda(G4double kinEnergy);
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inline G4double GetLambdaFromTable(G4double kinEnergy);
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inline G4double GetCurrentLambda(G4double kinEnergy);
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inline G4double ComputeCurrentLambda(G4double kinEnergy);
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// copy constructor and hide assignment operator
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G4VEmProcess(G4VEmProcess &);
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G4VEmProcess & operator=(const G4VEmProcess &right);
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// ======== Parameters of the class fixed at construction =========
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G4EmModelManager* modelManager;
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const G4ParticleDefinition* theGamma;
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const G4ParticleDefinition* theElectron;
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const G4ParticleDefinition* thePositron;
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const G4ParticleDefinition* secondaryParticle;
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G4bool buildLambdaTable;
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// ======== Parameters of the class fixed at initialisation =======
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std::vector<G4VEmModel*> emModels;
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// tables and vectors
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G4PhysicsTable* theLambdaTable;
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G4double* theEnergyOfCrossSectionMax;
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G4double* theCrossSectionMax;
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const std::vector<G4double>* theCuts;
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const std::vector<G4double>* theCutsGamma;
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const std::vector<G4double>* theCutsElectron;
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const std::vector<G4double>* theCutsPositron;
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G4int nLambdaBins;
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G4double minKinEnergy;
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G4double maxKinEnergy;
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G4double lambdaFactor;
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G4double polarAngleLimit;
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G4bool integral;
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G4bool applyCuts;
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G4bool startFromNull;
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G4bool useDeexcitation;
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G4int nDERegions;
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std::vector<const G4Region*> deRegions;
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G4bool* idxDERegions;
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// ======== Cashed values - may be state dependent ================
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protected:
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G4ParticleChangeForGamma fParticleChange;
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private:
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std::vector<G4DynamicParticle*> secParticles;
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G4VEmModel* currentModel;
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const G4ParticleDefinition* particle;
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const G4ParticleDefinition* currentParticle;
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// cash
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const G4Material* currentMaterial;
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const G4MaterialCutsCouple* currentCouple;
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size_t currentCoupleIndex;
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G4double mfpKinEnergy;
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G4double preStepKinEnergy;
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G4double preStepLambda;
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};
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// ======== Run time inline methods ================
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inline size_t G4VEmProcess::CurrentMaterialCutsCoupleIndex() const
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{
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return currentCoupleIndex;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4VEmProcess::GetGammaEnergyCut()
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{
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return (*theCutsGamma)[currentCoupleIndex];
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4VEmProcess::GetElectronEnergyCut()
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{
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return (*theCutsElectron)[currentCoupleIndex];
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline void G4VEmProcess::DefineMaterial(const G4MaterialCutsCouple* couple)
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{
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if(couple != currentCouple) {
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currentCouple = couple;
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currentMaterial = couple->GetMaterial();
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currentCoupleIndex = couple->GetIndex();
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mfpKinEnergy = DBL_MAX;
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline
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G4VEmModel* G4VEmProcess::SelectModel(G4double& kinEnergy, size_t index)
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{
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currentModel = modelManager->SelectModel(kinEnergy, index);
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currentModel->SetCurrentCouple(currentCouple);
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return currentModel;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline
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G4VEmModel* G4VEmProcess::SelectModelForMaterial(G4double kinEnergy,
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size_t& idxRegion) const
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{
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return modelManager->SelectModel(kinEnergy, idxRegion);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline void G4VEmProcess::InitialiseStep(const G4Track& track)
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{
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currentParticle = track.GetParticleDefinition();
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preStepKinEnergy = track.GetKineticEnergy();
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DefineMaterial(track.GetMaterialCutsCouple());
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SelectModel(preStepKinEnergy, currentCoupleIndex);
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if (theNumberOfInteractionLengthLeft < 0.0) mfpKinEnergy = DBL_MAX;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4VEmProcess::GetLambdaFromTable(G4double e)
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{
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return (((*theLambdaTable)[currentCoupleIndex])->Value(e));
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4VEmProcess::ComputeCurrentLambda(G4double e)
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{
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SelectModel(e, currentCoupleIndex);
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return currentModel->CrossSectionPerVolume(currentMaterial,currentParticle,
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e,(*theCuts)[currentCoupleIndex]);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4VEmProcess::GetCurrentLambda(G4double e)
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{
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G4double x = 0.0;
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if(theLambdaTable) { x = GetLambdaFromTable(e); }
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else { x = ComputeCurrentLambda(e); }
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return x;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4VEmProcess::GetLambda(G4double& kineticEnergy,
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const G4MaterialCutsCouple* couple)
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{
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DefineMaterial(couple);
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return GetCurrentLambda(kineticEnergy);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4VEmProcess::RecalculateLambda(G4double e,
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const G4MaterialCutsCouple* couple)
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{
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DefineMaterial(couple);
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return ComputeCurrentLambda(e);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline void G4VEmProcess::ComputeIntegralLambda(G4double e)
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{
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mfpKinEnergy = theEnergyOfCrossSectionMax[currentCoupleIndex];
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if (e <= mfpKinEnergy) {
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preStepLambda = GetLambdaFromTable(e);
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} else {
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G4double e1 = e*lambdaFactor;
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if(e1 > mfpKinEnergy) {
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preStepLambda = GetLambdaFromTable(e);
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G4double preStepLambda1 = GetLambdaFromTable(e1);
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if(preStepLambda1 > preStepLambda) {
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mfpKinEnergy = e1;
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preStepLambda = preStepLambda1;
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}
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} else {
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preStepLambda = theCrossSectionMax[currentCoupleIndex];
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}
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}
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}
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// ======== Get/Set inline methods used at initialisation ================
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inline void G4VEmProcess::SetLambdaBinning(G4int nbins)
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{
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nLambdaBins = nbins;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4int G4VEmProcess::LambdaBinning() const
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{
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return nLambdaBins;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline void G4VEmProcess::SetMinKinEnergy(G4double e)
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{
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minKinEnergy = e;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4VEmProcess::MinKinEnergy() const
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{
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return minKinEnergy;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline void G4VEmProcess::SetMaxKinEnergy(G4double e)
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{
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maxKinEnergy = e;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4VEmProcess::MaxKinEnergy() const
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{
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return maxKinEnergy;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline void G4VEmProcess::SetPolarAngleLimit(G4double val)
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{
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|
if(val < 0.0) polarAngleLimit = 0.0;
|
|
else if(val > pi) polarAngleLimit = pi;
|
|
else polarAngleLimit = val;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline G4double G4VEmProcess::PolarAngleLimit() const
|
|
{
|
|
return polarAngleLimit;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline const G4PhysicsTable* G4VEmProcess::LambdaTable() const
|
|
{
|
|
return theLambdaTable;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline const G4ParticleDefinition* G4VEmProcess::Particle() const
|
|
{
|
|
return particle;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline const G4ParticleDefinition* G4VEmProcess::SecondaryParticle() const
|
|
{
|
|
return secondaryParticle;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline void G4VEmProcess::SetLambdaFactor(G4double val)
|
|
{
|
|
if(val > 0.0 && val <= 1.0) { lambdaFactor = val; }
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline void G4VEmProcess::SetIntegral(G4bool val)
|
|
{
|
|
if(particle && particle != theGamma) { integral = val; }
|
|
if(integral) { buildLambdaTable = true; }
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline G4bool G4VEmProcess::IsIntegral() const
|
|
{
|
|
return integral;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline void G4VEmProcess::SetApplyCuts(G4bool val)
|
|
{
|
|
applyCuts = val;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline void G4VEmProcess::SetBuildTableFlag(G4bool val)
|
|
{
|
|
buildLambdaTable = val;
|
|
if(!val) { integral = false; }
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline G4ParticleChangeForGamma* G4VEmProcess::GetParticleChange()
|
|
{
|
|
return &fParticleChange;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline void G4VEmProcess::SetParticle(const G4ParticleDefinition* p)
|
|
{
|
|
particle = p;
|
|
currentParticle = p;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline void G4VEmProcess::SetSecondaryParticle(const G4ParticleDefinition* p)
|
|
{
|
|
secondaryParticle = p;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline void G4VEmProcess::SetStartFromNullFlag(G4bool val)
|
|
{
|
|
startFromNull = val;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
#endif
|